Photographic-print washer



0. DUNKEL.

PHOTOGRAPHIC PRINT WASHER.

APPLICATION FILED JULY 4,1920.

Patented Jan. 24, 1922.

INVEN TOR.

I a fl iu y R A. S 1. J. J Wm r J Q m\ Q Q mm I mm 0 P Q 9% R m mm Q WJTNESS $1 0 DUO/(6 and; 616% Mm Mfg? ATTORNEY.

PATENT OFFICE.

o'r'ro DUNKEL, or LOS ANGELES, CALIFORNIA.

PHOTOGBAPHIC-PRINT WASHER.

Specification of Letters Patent. Patented Ja 24, 1922 Application filed July 14, 1920. Serial No. 396,306.

T 0 all coho 17bit may concern:

Be it known that I, Orro DUNKEL, a citizen of the United States, residing at Los Angeles, in the count of Los Angeles and State of California, ave invented certain new and useful Improvements in a Photographic-Print WVasher, of which the following is a specification.

The object of this invention is to construct a photographic-print washer that will wash and develop blue-prints, brown-prints or other photographic-prints by a semi-automatic process. 7

Another object'is to use a constant supply of fresh water, and to conserve the consumption of the developing fluid.

Still another object is to construct a ma chine of this class that will require a minimum amount of floorspace.

lVith the foregoing and other objects in view which will appear as the description proceeds, this invention resides in the combination of details and construction herein-- after described and claimed.

I attain these objects by the illustration in the accompanying drawing, in which:

Figure 1 represents a front elevation of the machine.

Figure 2 represents a side elevation of the machine.

Referring to the drawings in which like characters of reference designate similar- I tended to catch the flushing water to be drained from the plate 2 tothe pipe 15. A plate 2 is operatively fulcrumed on the said rod 20 and passes operatively into the top opening of the said tank 3. The treadle 11 is operatively fulcrumed on the said rod 21 and is operatively connected to the said plate 2 by the link 16. The spring 28 is connected to the said treadle 11 and the frame 1. The treadle 10 is operatively fulcrumed on the said rod 21 and is connected toan arm 30 of the crank 8 by the rod 19. The said crank 8 1s fulcrumed on the shaft 20 and securely holds the clamp 7 on one arm 29 thereof. The spring 9 is in turn fastened to another arm 31 of the said crank 8 and to the support 27. The pipe 14 is adapted to lead to th upper-front face of the said plate 2 and is securely held in place by the hangers 17. The cap 24 closes the end of the said pipe 14 and the valve 18 is connected to the opposite end thereof. The holes 26 pass into the said pipe 14 and point toward the said plate 2. The pipe 13 is also adapted to lead to the upper-front face of the said plate 2 and is likewise securely held in place by the hangers 17. The cap'23 closes the end of the said pipe 13 and the pump 6 is connected to the opposite end thereof. The holes 25 pass into the said pipe 13 and point toward the plate 2. The pipe 12 is adapted to lead from the said pump 6 to the bottom portion of the compartment 4 within the tank 3. The pipe 15 is adapted to lead from the bottom portion of the compartment 5 to the sewer, not shown. A switch 22 is adapted to lie under the said treadle 11, and is connected in circuit with the motor 34 by a wire 33.

In the operation of this photographicprint washer the compartment 4 in the tank 3 is first filled to a predetermined level with a developing intensifying or fixing fluid, not shown. The treadle 10 is then pressed down and is adapted to draw the rod 19 and the crank 8 down therewith to release the clamp 7 from the plate 2. The photographicprint, not shown, may then be placed under the said clamp 2, and by releasing the said treadle 10 and the rod 19 to their uppermost position th said photographicprint is held in position by the tension of the spring 9.

The said photographioprint is then ready for the first or washing stage of treatment, after also allowing the treadle 11 to return to its uppermost position by the tension of the spring 28, thus holding the plate 2 back over the compartment 5 in the said tank 3. The valve 18 is then opened to allow fresh water, not shown, to fill the pipe 14 to the cap 24 to be forced under pressure through the holes 26 over the late 2, to wash the printing chemicals 0 the said photographic-print after the preliminary printing process." The used water is then allowed to escape through the pipe to the'sew'er, not shown, The same photographic-print is then allowed to remain in its clamped position on the-said plate 2 and is then ready for the second, or developing,

- stage of treatment, after pressing the said treadlell downto itslowermost position, torswingthesaid plate 2 over the compart ment 4 within thetank 3 and also to simul-- taneously close the switch 22 connected in circuit with, the motor, thus the said motor is adapted to automatically s ettlijg pump 6 connected thereto into motion. The supply ot developin'gfluid contained-within the said compartment 4 is-thus; adapted to be pumped through the pipe 12,,to the pipe 13 against the' cap 23, and is likewise foroed under pressure through the. holes; over the plate 2, to develop the photographic-print thereon; The final, or rinsing, stag of treatment follows. similarlyto;the-first, or washing, stage of treatment and the said photographicprint is then ready to-heiremoved from the:

said 'clamp7. 7

Having thus described this invention, what s claimed 1s:

A print washer ofthe class described, v

comprising an upright frame, a supporting means integral withthe top portion of the said upright'frame, a framing means integrial. with the,bottom portion of the said upclamping means opera-tively positioned over Lrijght frame,'a swinging plate suspended from the top portion of the said. frame, a

theto) face; ;o;fthe said )late a develo in V l l a .P a

fluid tank positioned under the foot portion of the said plate a drain, tank positioned";

parallel with thesaifd dex 'eloping-fluid tank under the foot portion of the SaidJplate, an operating means adapted to swing the said plate over, the said drain tank or the develop'ing -fluidtank,

with the; said pumping? means. 7

Los 'Angeles, Cal, July.9, 1920;, j v V I OTTO-'DUN-KEL. 

